Modernizing the infrastructure (#135)

* Fixed incorrect calls to label_kwargs and title_kwargs and added labelpad keyword argument

* added separate titles keyword

* added description of titles kwarg

* Support passing an empty Figure as the `fig` kwarg.

Small helper to support passing a new, empty Figure as the `fig` kwarg
(useful e.g. when embedding Matplotlib in a GUI -- the empty Figure
object may be created as part of the GUI setup).

Also document the supported values for `fig` -- in particular that if it
is unset, a *new* figure will be created, rather than overplotting the
current figure (which is a quite common behavior for libraries built
over Matplotlib, even though it doesn't really make sense here).

Matplotlib minimum version was bumped to 2.1 (2017) as that's what added
`Figure.subplots`.

* starting to modernize

* updating test infrastructe and baseline images

* adding github action for unit tests

* running isort

* don't capture warnings

* fixing warnings on gh actions?

* upload the images on failure

* experimenting with freetype

* removing travis build

* update matplotlib for better baseline images

* skip windows tests

* adding sdist build to tests

* cleaning up manifest and testing build

* run action on releases

Co-authored-by: Daniela Huppenkothen <dhuppenk@uw.edu>
Co-authored-by: Dominic Pesce <dom.pesce@gmail.com>
Co-authored-by: Antony Lee <anntzer.lee@gmail.com>

.github/workflows/tests.yml

@@ -0,0 +1,93 @@
+name: Tests
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+  release:
+    types: [published]
+
+jobs:
+  tests:
+    name: "py${{ matrix.python-version }} on ${{ matrix.os }}"
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        python-version: [3.7, 3.8]
+        os: [ubuntu-latest, macos-latest]
+
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Set up Python ${{ matrix.python-version }}
+        uses: actions/setup-python@v2
+        with:
+          python-version: ${{ matrix.python-version }}
+
+      - name: Install dependencies
+        run: |
+          python -m pip install -U pip
+          python -m pip install ".[test]"
+
+      - name: Check the style
+        run: |
+          isort -c src/corner
+          isort -c tests
+          black --check src/corner
+          black --check tests
+
+      - name: Run the unit tests
+        run: python -m pytest -v tests
+
+      - uses: actions/upload-artifact@v2
+        if: ${{ failure() }}
+        with:
+          path: ./result_images
+
+  build:
+    name: Build source distribution
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+
+      - uses: actions/setup-python@v2
+        name: Install Python
+        with:
+          python-version: "3.8"
+
+      - name: Build
+        run: |
+          python -m pip install -U pip pep517 twine setuptools_scm
+          python -m pep517.build .
+
+      - name: Test the sdist
+        run: |
+          python -m venv venv-sdist
+          venv-sdist/bin/python -m pip install dist/corner*.tar.gz
+          venv-sdist/bin/python -c "import corner;print(corner.__version__)"
+
+      - name: Test the wheel
+        run: |
+          python -m venv venv-wheel
+          venv-wheel/bin/python -m pip install dist/corner*.whl
+          venv-wheel/bin/python -c "import corner;print(corner.__version__)"
+
+      - uses: actions/upload-artifact@v2
+        with:
+          path: dist/*
+
+  upload_pypi:
+    needs: [tests, build]
+    runs-on: ubuntu-latest
+    if: github.event_name == 'release' && github.event.action == 'published'
+    steps:
+      - uses: actions/download-artifact@v2
+        with:
+          name: artifact
+          path: dist
+
+      - uses: pypa/gh-action-pypi-publish@master
+        with:
+          user: __token__
+          password: ${{ secrets.pypi_password }}
+          # To test: repository_url: https://test.pypi.org/legacy/

.gitignore

@@ -9,3 +9,4 @@ test_figures
 .coverage
 !corner/tests/baseline_images/*/*.png
 .pytest_cache
+corner_version.py

LICENSE

@@ -1,4 +1,5 @@
-Copyright (c) 2013-2016 Daniel Foreman-Mackey
+Copyright (c) 2013-2020 Daniel Foreman-Mackey
+
 All rights reserved.
 
 Redistribution and use in source and binary forms, with or without

MANIFEST.in

@@ -1 +1,6 @@
 include README.rst LICENSE
+
+exclude corner.png demo.py *.yml
+recursive-exclude docs *
+recursive-exclude tests *
+recursive-exclude paper *

README.rst

@@ -1,12 +1,10 @@
 corner.py
 =========
 
-.. image:: http://img.shields.io/travis/dfm/corner.py/master.svg?style=flat
-    :target: https://travis-ci.org/dfm/corner.py
-.. image:: https://coveralls.io/repos/github/dfm/corner.py/badge.svg?branch=master&style=flat
-    :target: https://coveralls.io/github/dfm/corner.py?branch=master&style=flat
+.. image:: https://github.com/dfm/corner.py/workflows/Tests/badge.svg?style=flat
+    :target: https://github.com/dfm/corner.py/actions
 .. image:: http://img.shields.io/badge/license-BSD-blue.svg?style=flat
-    :target: https://github.com/dfm/corner.py/blob/master/LICENSE
+    :target: https://github.com/dfm/corner.py/blob/main/LICENSE
 .. image:: https://zenodo.org/badge/4729/dfm/corner.py.svg?style=flat
     :target: https://zenodo.org/badge/latestdoi/4729/dfm/corner.py
 .. image:: http://joss.theoj.org/papers/10.21105/joss.00024/status.svg?style=flat